Ventilator.



A. G. WILSON. VENTILATOB.

APPLICATION FILED NOV. 2, 1910-.

1,028,51 8, Patented June 4, 1912.

. 2 sums-sum 1. 3

A. G. WILSON.

VENTILATOB.

APPLICATION 211.121) NOV. 2. 1910.

Patented June 4, 19 12.

2 SHEETS-SHEET 2.

' coumnu PLmoolzAPu 00., WASHINGTON, n. c.

ALEXANDER Gr. WILSON, OF CHICAGO, ILLINOIS.

VENTILATOR.

Specification of Letters Patent.

Patented June 4, 1912.

Application filed November 2, 1910. Serial No. 590,298.

To all whom it may concern:

Be it known that I, ALEXANDER G. VVIL- SON, a citizen of the United States, residing at Chicago, in the county of Cook and State 'of Illinois, have invented a new and useful Improvement in Ventilators, of which the following is a specification.

My invention relates to an improvement in the class of ventilators in which the suction-action exerted upon the ventilator by the force of air-pressure produced against it operates to withdraw impure air' from the interior of a car or other apartment provided therewith.

In the accompanying drawings, Figure 1 is .a perspective view of my improved ventilator; Fig. 2 is a section on line 2, Fig. 1; Fig. 3 is a section on line 3, Fig. 2, and Fig. 4 is a section like that presented in Fig. 2, but showing a slight modification better adapting the ventilator to be used in a horizontal position.

The ventilator is a box which is best made ofsheet-metal, such as galvanized iron; and it may be formed in any desired shape, though it is illustrated in its preferred general rectangular shape. The inner open end 5, or base, shown of rectangular shape and forming the inlet for the air to be withdrawn, is adapted to cover the vent-opening in the roof or other parts of a car (not shown) to which my improved device is more especially adapted to be applied. The outer end 6, as also the two lateral faces 7, 7, are closed or imperforate, the end 6 being wider between these faces than the corresponding section of the base 5. The faces 7 are the outer walls which are opposed to the air-pressure produced by running the car in one direct-ion or the other; and while they may be fiat or regular, it is best, for the reason hereinafter explained, to form them bulging, and preferably, as shown, each with a central V-shaped section 8. The bases 9 of the faces 7 are built to project outwardly from the narrower ventilator-base 5 to the width between those faces of the end 6, the width of which at rightangles to the faces 7, however, mayc0rrespond with that of the open base, as shown. The side walls 10, 10, extending between the base and end 6 are closed or imperforate, and are shaped, by preference, to present the concave outer surfaces shown, for the purpose hereinafter explained. The sides 10 thus form with the faces 7 openings 11 adv :jacent and at right-angles to the faces. The corresponding lateral edges of the sides 10 "adjacent to each face are connected by a wall 12 containing acentral longitudinal opening 13, the parts of the wall which flank its contained opening forming deflector-walls 14 preferably of the general \l-shape in cross-section illustrated.

The ventilator constructed as shown is more particularly intended to be used on the roof or deck of a car by fastening it through flanges 15 on its base 5 over a vent-opening provided in such roof, or deck; and its position in use may be either vertical, that is with the end 6 uppermost, or horizontal, but always with the parts 7 facing the line of travel of the car. With the device placed vertically and the car provided with it moving in the direction of the arrow at a on Figs. 1 and 2, the advance-face 7, by rainming the air, deflects the resultant air-pressure against it with suflicient velocity past the openings 11 adjacent to that face and the relatively rear openings 11, to suck the impure air out of the car through the base 5 into the central ventilator-chamber 16 and out through the openings 13 and 11. As will be seen, the solid or imperforate advance face 7 creates the suction-action at the openings 11 so that the operation of the device differs from all ventilators of the present class which present openings in their advance-sides for rushing air through them and thus through the ventilator by the motion of the car to suck the impure air out of the latter. It is desirable to provide faces 7 of bulging shape, and particularly in the shape illustrated, thereby to more effectively deflect the air-currents past the openings 11. It is also advantageous to provide the outer surfaces of the sides 10 of theconcave shape shown, since the air-currents in passing them on clearing the advance-openings 11, tend to follow the depressed surfaces of the sides and in clearing the latter, to be deflected outwardly and thus, while being thereby directed from entering the ventilator through the rear openings 11,exert suction at these openings to supplement the suction-action on the corresponding advance-openings. However, the device operates satisfactorily when the sides 10 are flat. The purpose of the'angular walls 12 is to avoid the entrance of cinders, dust, rain or snow into the car through the ventilator by wind striking it laterally. The illustrated shape, or any other suitable shape of angular cross-section, of these walls, particularly by cooperating with the opposing bulging surfaces of the faces 7 deflects such wind and the objectionable matter carried by it, entering the openings 11 at either side of the device, past the openings 13 and out of the ventilator through the opposite openings 11. However, when the device is used to extend in a horizontal position, as from a vent-opening in a side of the deck of a car running in the direction indicatedby the arrow at a in Fig. 4:, the inner wings of the then uppermost V-shaped walls 12 should be extended downwardly to some distance over the openings 13, as shown at 14:, to aiford shields against down-pouring rain, snow, sleet and the like, entering the car through the ventilator by way of the then uppermost openings 11, and deflect such matter to discharge through the lowermost openings'll. 7

What I claim as new and desire to secure by Letters Patent is:

1. A ventilator of the character described, comprising a box having an inlet, imperforate faces having central bulging sections and lateral flat sections extending therefrom, imperforate sides forming between them and said fiat sections interposed outletopenings, and interior deflecting-walls extending between said imperforate faces and connecting the opposite sides at their corresponding lateral edges to form with said sides a chamber within the box open to said inlet, said walls being formed of members of angular cross-section forming openings between them by which said outlet-openings communicate through said chamber with said inlet.

2. A ventilator of the character described, comprising a box having an inlet, imperforate faces having central V-shaped sections and lateral fiat sections extending therefrom, imperforate sides forming be tween them and said flat sections interposed outlet-openings, and interior deflecting- "walls joining corresponding edges of said sides to form therewith a chamber within the boxopen to said inlet, said walls being formed of members of general V-shape in cross-section forming openings between them by which said outlet-openings communicate with said inlet, and the apexes of said members extending inwardly. i

3. A ventilator of the character described, comprising a box provided with an open base, a closed outer end, relatively-opposite imperforate air-ramming and deflecting faces having central bulging sections and lateral fiat sections extending therefrom, and relatively-opposite imperforate "sidewalls forming openings between their edges and those of said faces, and interior deflecting-walls extending between said faces and joining corresponding edges of said side-walls to form therewith a chamber within the box open to said inlet, said de-' fiecting-walls being formed of members of general V-shape in cross-section forming between them openings through which sa1d s outlet-openings communicate through said chamber with said inlet.

4. A ventilator of the character described, comprising a box provided with an open base, a closed outer end, relatively-opposite imperforate air-ramming and vdeflecting faces having central bulging sections and lateral flat sections extending therefrom, and relatively-opposite imperforate sidewalls presenting concave outer surfaces and formlng openings between thelr edges and those of said faces, and interior deflecting walls extending between said faces and joining correspondlng edges of said side-walls to form therewlth a chamber Wltllln the box open to said inlet, said deflecting-walls being formed of members of angular crosssection forming between them openings through whlch sa1d outlet-openings communicate through said chamber with said inlet.

ALEXANDER G. l/VILSON. In presence of v a J. GJANDERSON, R. A. SoHAErER.

Copiesof this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

